+1 for the key message here. Lawyers aren't negotiators, and you have to remember _all the time_ that they work for you in this negotiation, not the other way around. They will give you lots of advice, and you should think of it as such, and ask questions about the real risk you might be taking, and make decisions accordingly.
I've watched friends have sales fall through because they didn't trust their own judgment when faced with their lawyer's thoughts. Apply the same confidence you have (or fake) for building your product to the redlines from your lawyers.